Billie Eilish's Met Gala 2021 Red Carpet Photos Must Be Seen!

Billie Eilish is absolutely slaying the 2021 Met Gala on Monday (September 13) at the Metropolitan Museum of Art in New York City.

The 19-year-old star channeled an old Hollywood look and an amazing train as she arrived for her moment. Billie is one of the celeb co-chairs this evening! You can find out the other three celebs who were personally asked by Anna Wintour, as well!

The annual Costume Institute Gala is the fashion world’s equivalent of the Oscars and the event is usually held on the first Monday of May, but it was postponed until September 2021 due to the pandemic. The theme this year is “In America” and there will be a two-part exhibit with the second part debuting at next year’s Met Gala.

FYI: Billie is wearing Oscar de la Renta.

Click through the gallery for 10+ photos of Billie Eilish on the red carpet…